Comparison of abundance of perfect and imperfect trinucleotide repeats in human and chimpanzee chromosomes 21

ALLCODINGINTRONINTERGENIC
H. sapiensP. troglodytesH. sapiensP. troglodytesH. sapiensP. troglodytesH. sapiensP. troglodytes
perfectimperfectperfectimperfectperfectimperfectperfectimperfectperfectimperfectperfectimperfectperfectimperfectperfectimperfect
LPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMbLPMbNPMb
aac174.3911.97269.5111.64175.0211.39266.8011.110.000.000.000.000.000.000.000.00163.6711.27244.1811.06173.3811.02268.4910.80163.9411.17257.2210.84166.9710.94255.5710.68
aag52.973.65106.803.0450.403.53113.263.17215.9717.28607.6117.2834.152.8534.152.8541.482.9860.732.5538.422.9065.812.9051.503.43112.562.7753.343.65127.653.15
aat262.1116.77387.4516.33227.1115.20346.6514.750.000.000.000.000.000.000.000.00223.6514.36318.5114.04201.4513.03284.8612.81258.2516.63388.1916.17223.6215.08349.3314.59
acc71.544.42179.462.8937.702.6460.362.38241.8914.40397.3914.40213.4411.38298.8111.3852.643.62222.162.4540.093.1262.143.0172.104.26152.892.5633.742.3255.772.01
acg000.000.00000.000.00000.000.00000.000.00000.000.00000.000.00000.000.00000.000.00
act11.230.7740.180.688.410.6221.400.620.000.000.000.000.000.000.000.0012.440.96101.460.641.340.111.340.119.800.6215.430.6210.030.7225.830.72
agc46.073.5765.623.5137.112.8647.372.86587.4543.201529.0940.31418.3431.30867.9831.3041.163.3050.523.3035.752.7844.432.7834.132.6540.952.6131.462.4336.402.43
agg69.775.16160.564.4551.583.96124.033.67276.4520.16437.7117.2876.845.69179.295.6968.915.21135.384.3663.474.90115.374.4560.314.47154.713.8543.543.34121.503.12
atc38.652.7157.692.5632.482.3348.662.19112.318.64120.948.6434.152.8534.152.8544.982.9876.042.7729.402.0045.661.7832.392.3245.672.2331.112.2446.462.13
ccg12.650.8239.470.8011.020.7926.030.76103.678.64152.628.64179.2914.23412.6511.385.110.4222.010.4210.020.7825.500.786.330.4129.740.417.410.5318.430.53
LPMb: length per megabase of repeats in class; NPMb: number of repeats in class per megabase

Statistical analysis (contingency test results)

Data points with the smallest value were exluded iteratively until all remaining data contributes more than 5% of the total. Data sets were normalized to 100%

FeatureProbabilityChiSquareDegrees of freedomused / all data pointsExcluded repeats
All sequences: perfect repeats
length per megabase0.9661.40667 / 9 act, ccg
number per megabase0.9910.82167 / 9 act, ccg
Coding regions: perfect repeats
length per megabase0.00911.48934 / 9 aac, aag, aat, act, atc
number per megabase0.01011.27134 / 9 aac, aag, aat, act, atc
Introns: perfect repeats
length per megabase0.9930.77467 / 9 act, ccg
number per megabase0.9990.38967 / 9 act, ccg
Intergenic regions: perfect repeats
length per megabase0.8202.20756 / 9 act, atc, ccg
number per megabase0.9711.30667 / 9 act, ccg
All sequences: imperfect repeats
length per megabase0.2884.98945 / 9 act, agc, atc, ccg
number per megabase1.0000.22967 / 9 act, ccg
Coding regions: imperfect repeats
length per megabase0.4511.59323 / 9 aac, aag, aat, act, atc, ccg
number per megabase0.0727.00634 / 9 aac, aag, aat, act, atc
Introns: imperfect repeats
length per megabase0.1198.76056 / 9 act, agc, ccg
number per megabase0.9940.45556 / 9 act, atc, ccg
Intergenic regions: imperfect repeats
length per megabase0.3814.18645 / 9 act, agc, atc, ccg
number per megabase0.9990.38267 / 9 act, ccg